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1da177e4 LT |
1 | |
2 | /* | |
af36d7f0 JG |
3 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
4 | * Copyright 2003-2004 Jeff Garzik | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; see the file COPYING. If not, write to | |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | * | |
22 | * libata documentation is available via 'make {ps|pdf}docs', | |
23 | * as Documentation/DocBook/libata.* | |
24 | * | |
25 | * Hardware documentation available from http://www.t13.org/ | |
26 | * | |
1da177e4 LT |
27 | */ |
28 | ||
29 | #ifndef __LINUX_ATA_H__ | |
30 | #define __LINUX_ATA_H__ | |
31 | ||
32 | #include <linux/types.h> | |
33 | ||
34 | /* defines only for the constants which don't work well as enums */ | |
35 | #define ATA_DMA_BOUNDARY 0xffffUL | |
36 | #define ATA_DMA_MASK 0xffffffffULL | |
37 | ||
38 | enum { | |
39 | /* various global constants */ | |
40 | ATA_MAX_DEVICES = 2, /* per bus/port */ | |
41 | ATA_MAX_PRD = 256, /* we could make these 256/256 */ | |
42 | ATA_SECT_SIZE = 512, | |
18d6e9d5 | 43 | ATA_MAX_SECTORS_128 = 128, |
8b881b04 JG |
44 | ATA_MAX_SECTORS = 256, |
45 | ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ | |
f8d8e579 | 46 | ATA_MAX_SECTORS_TAPE = 65535, |
1da177e4 LT |
47 | |
48 | ATA_ID_WORDS = 256, | |
a0cf733b TH |
49 | ATA_ID_SERNO = 10, |
50 | ATA_ID_FW_REV = 23, | |
51 | ATA_ID_PROD = 27, | |
11e29e21 AC |
52 | ATA_ID_OLD_PIO_MODES = 51, |
53 | ATA_ID_FIELD_VALID = 53, | |
1da177e4 | 54 | ATA_ID_MWDMA_MODES = 63, |
11e29e21 AC |
55 | ATA_ID_PIO_MODES = 64, |
56 | ATA_ID_EIDE_DMA_MIN = 65, | |
57 | ATA_ID_EIDE_PIO = 67, | |
58 | ATA_ID_EIDE_PIO_IORDY = 68, | |
1da177e4 | 59 | ATA_ID_UDMA_MODES = 88, |
11e29e21 | 60 | ATA_ID_MAJOR_VER = 80, |
1da177e4 LT |
61 | ATA_ID_PIO4 = (1 << 1), |
62 | ||
a0cf733b TH |
63 | ATA_ID_SERNO_LEN = 20, |
64 | ATA_ID_FW_REV_LEN = 8, | |
65 | ATA_ID_PROD_LEN = 40, | |
66 | ||
1da177e4 | 67 | ATA_PCI_CTL_OFS = 2, |
4099d143 BZ |
68 | |
69 | ATA_PIO0 = (1 << 0), | |
70 | ATA_PIO1 = ATA_PIO0 | (1 << 1), | |
71 | ATA_PIO2 = ATA_PIO1 | (1 << 2), | |
72 | ATA_PIO3 = ATA_PIO2 | (1 << 3), | |
73 | ATA_PIO4 = ATA_PIO3 | (1 << 4), | |
74 | ATA_PIO5 = ATA_PIO4 | (1 << 5), | |
75 | ATA_PIO6 = ATA_PIO5 | (1 << 6), | |
76 | ||
91a6d4ed BZ |
77 | ATA_SWDMA0 = (1 << 0), |
78 | ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1), | |
79 | ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2), | |
80 | ||
81 | ATA_SWDMA2_ONLY = (1 << 2), | |
82 | ||
83 | ATA_MWDMA0 = (1 << 0), | |
84 | ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1), | |
85 | ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2), | |
86 | ||
87 | ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2), | |
88 | ATA_MWDMA2_ONLY = (1 << 2), | |
89 | ||
1da177e4 LT |
90 | ATA_UDMA0 = (1 << 0), |
91 | ATA_UDMA1 = ATA_UDMA0 | (1 << 1), | |
92 | ATA_UDMA2 = ATA_UDMA1 | (1 << 2), | |
93 | ATA_UDMA3 = ATA_UDMA2 | (1 << 3), | |
94 | ATA_UDMA4 = ATA_UDMA3 | (1 << 4), | |
95 | ATA_UDMA5 = ATA_UDMA4 | (1 << 5), | |
96 | ATA_UDMA6 = ATA_UDMA5 | (1 << 6), | |
97 | ATA_UDMA7 = ATA_UDMA6 | (1 << 7), | |
98 | /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ | |
99 | ||
100 | ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ | |
101 | ||
102 | /* DMA-related */ | |
103 | ATA_PRD_SZ = 8, | |
104 | ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), | |
105 | ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ | |
106 | ||
107 | ATA_DMA_TABLE_OFS = 4, | |
108 | ATA_DMA_STATUS = 2, | |
109 | ATA_DMA_CMD = 0, | |
110 | ATA_DMA_WR = (1 << 3), | |
111 | ATA_DMA_START = (1 << 0), | |
112 | ATA_DMA_INTR = (1 << 2), | |
113 | ATA_DMA_ERR = (1 << 1), | |
114 | ATA_DMA_ACTIVE = (1 << 0), | |
115 | ||
116 | /* bits in ATA command block registers */ | |
117 | ATA_HOB = (1 << 7), /* LBA48 selector */ | |
118 | ATA_NIEN = (1 << 1), /* disable-irq flag */ | |
119 | ATA_LBA = (1 << 6), /* LBA28 selector */ | |
120 | ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ | |
121 | ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ | |
122 | ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ | |
123 | ATA_BUSY = (1 << 7), /* BSY status bit */ | |
124 | ATA_DRDY = (1 << 6), /* device ready */ | |
125 | ATA_DF = (1 << 5), /* device fault */ | |
126 | ATA_DRQ = (1 << 3), /* data request i/o */ | |
127 | ATA_ERR = (1 << 0), /* have an error */ | |
128 | ATA_SRST = (1 << 2), /* software reset */ | |
9be1e979 TH |
129 | ATA_ICRC = (1 << 7), /* interface CRC error */ |
130 | ATA_UNC = (1 << 6), /* uncorrectable media error */ | |
131 | ATA_IDNF = (1 << 4), /* ID not found */ | |
1da177e4 LT |
132 | ATA_ABORTED = (1 << 2), /* command aborted */ |
133 | ||
134 | /* ATA command block registers */ | |
135 | ATA_REG_DATA = 0x00, | |
136 | ATA_REG_ERR = 0x01, | |
137 | ATA_REG_NSECT = 0x02, | |
138 | ATA_REG_LBAL = 0x03, | |
139 | ATA_REG_LBAM = 0x04, | |
140 | ATA_REG_LBAH = 0x05, | |
141 | ATA_REG_DEVICE = 0x06, | |
142 | ATA_REG_STATUS = 0x07, | |
143 | ||
144 | ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ | |
145 | ATA_REG_CMD = ATA_REG_STATUS, | |
146 | ATA_REG_BYTEL = ATA_REG_LBAM, | |
147 | ATA_REG_BYTEH = ATA_REG_LBAH, | |
148 | ATA_REG_DEVSEL = ATA_REG_DEVICE, | |
149 | ATA_REG_IRQ = ATA_REG_NSECT, | |
150 | ||
151 | /* ATA device commands */ | |
ab2181cf | 152 | ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ |
1da177e4 | 153 | ATA_CMD_CHK_POWER = 0xE5, /* check power mode */ |
972dcafb DG |
154 | ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */ |
155 | ATA_CMD_IDLE = 0xE3, /* place in idle power mode */ | |
1da177e4 LT |
156 | ATA_CMD_EDD = 0x90, /* execute device diagnostic */ |
157 | ATA_CMD_FLUSH = 0xE7, | |
158 | ATA_CMD_FLUSH_EXT = 0xEA, | |
159 | ATA_CMD_ID_ATA = 0xEC, | |
160 | ATA_CMD_ID_ATAPI = 0xA1, | |
161 | ATA_CMD_READ = 0xC8, | |
162 | ATA_CMD_READ_EXT = 0x25, | |
163 | ATA_CMD_WRITE = 0xCA, | |
164 | ATA_CMD_WRITE_EXT = 0x35, | |
9a3dccc4 | 165 | ATA_CMD_WRITE_FUA_EXT = 0x3D, |
88e49034 TH |
166 | ATA_CMD_FPDMA_READ = 0x60, |
167 | ATA_CMD_FPDMA_WRITE = 0x61, | |
1da177e4 LT |
168 | ATA_CMD_PIO_READ = 0x20, |
169 | ATA_CMD_PIO_READ_EXT = 0x24, | |
170 | ATA_CMD_PIO_WRITE = 0x30, | |
171 | ATA_CMD_PIO_WRITE_EXT = 0x34, | |
8cbd6df1 AL |
172 | ATA_CMD_READ_MULTI = 0xC4, |
173 | ATA_CMD_READ_MULTI_EXT = 0x29, | |
174 | ATA_CMD_WRITE_MULTI = 0xC5, | |
175 | ATA_CMD_WRITE_MULTI_EXT = 0x39, | |
9a3dccc4 | 176 | ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE, |
1da177e4 | 177 | ATA_CMD_SET_FEATURES = 0xEF, |
2c3d2a46 | 178 | ATA_CMD_SET_MULTI = 0xC6, |
1da177e4 LT |
179 | ATA_CMD_PACKET = 0xA0, |
180 | ATA_CMD_VERIFY = 0x40, | |
181 | ATA_CMD_VERIFY_EXT = 0x42, | |
2dcb407e JG |
182 | ATA_CMD_STANDBYNOW1 = 0xE0, |
183 | ATA_CMD_IDLEIMMEDIATE = 0xE1, | |
054a5fba | 184 | ATA_CMD_SLEEP = 0xE6, |
8bf62ece | 185 | ATA_CMD_INIT_DEV_PARAMS = 0x91, |
b6782728 AC |
186 | ATA_CMD_READ_NATIVE_MAX = 0xF8, |
187 | ATA_CMD_READ_NATIVE_MAX_EXT = 0x27, | |
1e999736 AC |
188 | ATA_CMD_SET_MAX = 0xF9, |
189 | ATA_CMD_SET_MAX_EXT = 0x37, | |
88e49034 | 190 | ATA_CMD_READ_LOG_EXT = 0x2f, |
814600ee TH |
191 | ATA_CMD_PMP_READ = 0xE4, |
192 | ATA_CMD_PMP_WRITE = 0xE8, | |
88e49034 TH |
193 | |
194 | /* READ_LOG_EXT pages */ | |
195 | ATA_LOG_SATA_NCQ = 0x10, | |
1da177e4 | 196 | |
5a5dbd18 ML |
197 | /* READ/WRITE LONG (obsolete) */ |
198 | ATA_CMD_READ_LONG = 0x22, | |
199 | ATA_CMD_READ_LONG_ONCE = 0x23, | |
200 | ATA_CMD_WRITE_LONG = 0x32, | |
201 | ATA_CMD_WRITE_LONG_ONCE = 0x33, | |
202 | ||
1da177e4 LT |
203 | /* SETFEATURES stuff */ |
204 | SETFEATURES_XFER = 0x03, | |
205 | XFER_UDMA_7 = 0x47, | |
206 | XFER_UDMA_6 = 0x46, | |
207 | XFER_UDMA_5 = 0x45, | |
208 | XFER_UDMA_4 = 0x44, | |
209 | XFER_UDMA_3 = 0x43, | |
210 | XFER_UDMA_2 = 0x42, | |
211 | XFER_UDMA_1 = 0x41, | |
212 | XFER_UDMA_0 = 0x40, | |
b352e57d AC |
213 | XFER_MW_DMA_4 = 0x24, /* CFA only */ |
214 | XFER_MW_DMA_3 = 0x23, /* CFA only */ | |
1da177e4 LT |
215 | XFER_MW_DMA_2 = 0x22, |
216 | XFER_MW_DMA_1 = 0x21, | |
217 | XFER_MW_DMA_0 = 0x20, | |
b4b52db7 AC |
218 | XFER_SW_DMA_2 = 0x12, |
219 | XFER_SW_DMA_1 = 0x11, | |
220 | XFER_SW_DMA_0 = 0x10, | |
b352e57d AC |
221 | XFER_PIO_6 = 0x0E, /* CFA only */ |
222 | XFER_PIO_5 = 0x0D, /* CFA only */ | |
1da177e4 LT |
223 | XFER_PIO_4 = 0x0C, |
224 | XFER_PIO_3 = 0x0B, | |
225 | XFER_PIO_2 = 0x0A, | |
226 | XFER_PIO_1 = 0x09, | |
227 | XFER_PIO_0 = 0x08, | |
1da177e4 LT |
228 | XFER_PIO_SLOW = 0x00, |
229 | ||
3057ac3c | 230 | SETFEATURES_WC_ON = 0x02, /* Enable write cache */ |
231 | SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ | |
232 | ||
169439c2 ML |
233 | SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ |
234 | ||
9f45cbd3 KCA |
235 | SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ |
236 | SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */ | |
237 | ||
238 | /* SETFEATURE Sector counts for SATA features */ | |
239 | SATA_AN = 0x05, /* Asynchronous Notification */ | |
ca77329f | 240 | SATA_DIPM = 0x03, /* Device Initiated Power Management */ |
9f45cbd3 | 241 | |
1da177e4 LT |
242 | /* ATAPI stuff */ |
243 | ATAPI_PKT_DMA = (1 << 0), | |
244 | ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: | |
245 | 0=to device, 1=to host */ | |
246 | ATAPI_CDB_LEN = 16, | |
247 | ||
814600ee TH |
248 | /* PMP stuff */ |
249 | SATA_PMP_MAX_PORTS = 15, | |
250 | SATA_PMP_CTRL_PORT = 15, | |
251 | ||
252 | SATA_PMP_GSCR_DWORDS = 128, | |
253 | SATA_PMP_GSCR_PROD_ID = 0, | |
254 | SATA_PMP_GSCR_REV = 1, | |
255 | SATA_PMP_GSCR_PORT_INFO = 2, | |
256 | SATA_PMP_GSCR_ERROR = 32, | |
257 | SATA_PMP_GSCR_ERROR_EN = 33, | |
258 | SATA_PMP_GSCR_FEAT = 64, | |
259 | SATA_PMP_GSCR_FEAT_EN = 96, | |
260 | ||
261 | SATA_PMP_PSCR_STATUS = 0, | |
262 | SATA_PMP_PSCR_ERROR = 1, | |
263 | SATA_PMP_PSCR_CONTROL = 2, | |
264 | ||
265 | SATA_PMP_FEAT_BIST = (1 << 0), | |
266 | SATA_PMP_FEAT_PMREQ = (1 << 1), | |
267 | SATA_PMP_FEAT_DYNSSC = (1 << 2), | |
268 | SATA_PMP_FEAT_NOTIFY = (1 << 3), | |
269 | ||
1da177e4 LT |
270 | /* cable types */ |
271 | ATA_CBL_NONE = 0, | |
272 | ATA_CBL_PATA40 = 1, | |
273 | ATA_CBL_PATA80 = 2, | |
fc085150 AC |
274 | ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ |
275 | ATA_CBL_PATA_UNK = 4, | |
276 | ATA_CBL_SATA = 5, | |
1da177e4 LT |
277 | |
278 | /* SATA Status and Control Registers */ | |
279 | SCR_STATUS = 0, | |
280 | SCR_ERROR = 1, | |
281 | SCR_CONTROL = 2, | |
282 | SCR_ACTIVE = 3, | |
283 | SCR_NOTIFICATION = 4, | |
284 | ||
9be1e979 TH |
285 | /* SError bits */ |
286 | SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */ | |
287 | SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */ | |
288 | SERR_DATA = (1 << 8), /* unrecovered data error */ | |
289 | SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */ | |
290 | SERR_PROTOCOL = (1 << 10), /* protocol violation */ | |
291 | SERR_INTERNAL = (1 << 11), /* host internal error */ | |
292 | SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ | |
1333e194 RH |
293 | SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ |
294 | SERR_COMM_WAKE = (1 << 18), /* Comm wake */ | |
295 | SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ | |
296 | SERR_DISPARITY = (1 << 20), /* Disparity */ | |
297 | SERR_CRC = (1 << 21), /* CRC error */ | |
298 | SERR_HANDSHAKE = (1 << 22), /* Handshake error */ | |
299 | SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ | |
300 | SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ | |
301 | SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ | |
9be1e979 TH |
302 | SERR_DEV_XCHG = (1 << 26), /* device exchanged */ |
303 | ||
1da177e4 LT |
304 | /* struct ata_taskfile flags */ |
305 | ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */ | |
306 | ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ | |
307 | ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ | |
308 | ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ | |
8bf62ece | 309 | ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ |
9a3dccc4 | 310 | ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ |
ea9b395f | 311 | ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ |
1da177e4 LT |
312 | }; |
313 | ||
314 | enum ata_tf_protocols { | |
315 | /* ATA taskfile protocols */ | |
316 | ATA_PROT_UNKNOWN, /* unknown/invalid */ | |
317 | ATA_PROT_NODATA, /* no data */ | |
1dce589c | 318 | ATA_PROT_PIO, /* PIO data xfer */ |
1da177e4 | 319 | ATA_PROT_DMA, /* DMA */ |
88e49034 | 320 | ATA_PROT_NCQ, /* NCQ */ |
1da177e4 LT |
321 | ATA_PROT_ATAPI, /* packet command, PIO data xfer*/ |
322 | ATA_PROT_ATAPI_NODATA, /* packet command, no data */ | |
323 | ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */ | |
324 | }; | |
325 | ||
326 | enum ata_ioctls { | |
327 | ATA_IOC_GET_IO32 = 0x309, | |
328 | ATA_IOC_SET_IO32 = 0x324, | |
329 | }; | |
330 | ||
331 | /* core structures */ | |
332 | ||
333 | struct ata_prd { | |
334 | u32 addr; | |
335 | u32 flags_len; | |
336 | }; | |
337 | ||
338 | struct ata_taskfile { | |
339 | unsigned long flags; /* ATA_TFLAG_xxx */ | |
340 | u8 protocol; /* ATA_PROT_xxx */ | |
341 | ||
342 | u8 ctl; /* control reg */ | |
343 | ||
344 | u8 hob_feature; /* additional data */ | |
345 | u8 hob_nsect; /* to support LBA48 */ | |
346 | u8 hob_lbal; | |
347 | u8 hob_lbam; | |
348 | u8 hob_lbah; | |
349 | ||
350 | u8 feature; | |
351 | u8 nsect; | |
352 | u8 lbal; | |
353 | u8 lbam; | |
354 | u8 lbah; | |
355 | ||
356 | u8 device; | |
357 | ||
358 | u8 command; /* IO operation */ | |
359 | }; | |
360 | ||
361 | #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) | |
1da177e4 LT |
362 | #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) |
363 | #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) | |
88e49034 TH |
364 | #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) |
365 | #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) | |
1da177e4 | 366 | #define ata_id_removeable(id) ((id)[0] & (1 << 7)) |
c7293870 | 367 | #define ata_id_has_dword_io(id) ((id)[48] & (1 << 0)) |
854c73a2 | 368 | #define ata_id_has_atapi_AN(id) \ |
9f45cbd3 KCA |
369 | ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ |
370 | ((id)[78] & (1 << 5)) ) | |
49554c19 | 371 | #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) |
0bc2a79a | 372 | #define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) |
1da177e4 LT |
373 | #define ata_id_u32(id,n) \ |
374 | (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) | |
375 | #define ata_id_u64(id,n) \ | |
376 | ( ((u64) (id)[(n) + 3] << 48) | \ | |
377 | ((u64) (id)[(n) + 2] << 32) | \ | |
378 | ((u64) (id)[(n) + 1] << 16) | \ | |
379 | ((u64) (id)[(n) + 0]) ) | |
380 | ||
312f7da2 AL |
381 | #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) |
382 | ||
ca77329f KCA |
383 | static inline bool ata_id_has_hipm(const u16 *id) |
384 | { | |
385 | u16 val = id[76]; | |
386 | ||
387 | if (val == 0 || val == 0xffff) | |
388 | return false; | |
389 | ||
390 | return val & (1 << 9); | |
391 | } | |
392 | ||
393 | static inline bool ata_id_has_dipm(const u16 *id) | |
394 | { | |
395 | u16 val = id[78]; | |
396 | ||
397 | if (val == 0 || val == 0xffff) | |
398 | return false; | |
399 | ||
400 | return val & (1 << 3); | |
401 | } | |
402 | ||
c7293870 AC |
403 | static inline int ata_id_has_fua(const u16 *id) |
404 | { | |
405 | if ((id[84] & 0xC000) != 0x4000) | |
406 | return 0; | |
407 | return id[84] & (1 << 6); | |
408 | } | |
409 | ||
410 | static inline int ata_id_has_flush(const u16 *id) | |
411 | { | |
412 | if ((id[83] & 0xC000) != 0x4000) | |
413 | return 0; | |
414 | return id[83] & (1 << 12); | |
415 | } | |
416 | ||
417 | static inline int ata_id_has_flush_ext(const u16 *id) | |
418 | { | |
419 | if ((id[83] & 0xC000) != 0x4000) | |
420 | return 0; | |
421 | return id[83] & (1 << 13); | |
422 | } | |
423 | ||
424 | static inline int ata_id_has_lba48(const u16 *id) | |
425 | { | |
426 | if ((id[83] & 0xC000) != 0x4000) | |
427 | return 0; | |
17bd9a2f GU |
428 | if (!ata_id_u64(id, 100)) |
429 | return 0; | |
c7293870 AC |
430 | return id[83] & (1 << 10); |
431 | } | |
432 | ||
433 | static inline int ata_id_hpa_enabled(const u16 *id) | |
434 | { | |
435 | /* Yes children, word 83 valid bits cover word 82 data */ | |
436 | if ((id[83] & 0xC000) != 0x4000) | |
437 | return 0; | |
438 | /* And 87 covers 85-87 */ | |
439 | if ((id[87] & 0xC000) != 0x4000) | |
440 | return 0; | |
441 | /* Check command sets enabled as well as supported */ | |
442 | if ((id[85] & ( 1 << 10)) == 0) | |
443 | return 0; | |
444 | return id[82] & (1 << 10); | |
445 | } | |
446 | ||
447 | static inline int ata_id_has_wcache(const u16 *id) | |
448 | { | |
449 | /* Yes children, word 83 valid bits cover word 82 data */ | |
450 | if ((id[83] & 0xC000) != 0x4000) | |
451 | return 0; | |
452 | return id[82] & (1 << 5); | |
453 | } | |
454 | ||
455 | static inline int ata_id_has_pm(const u16 *id) | |
456 | { | |
457 | if ((id[83] & 0xC000) != 0x4000) | |
458 | return 0; | |
459 | return id[82] & (1 << 3); | |
460 | } | |
461 | ||
462 | static inline int ata_id_rahead_enabled(const u16 *id) | |
463 | { | |
464 | if ((id[87] & 0xC000) != 0x4000) | |
465 | return 0; | |
466 | return id[85] & (1 << 6); | |
467 | } | |
468 | ||
469 | static inline int ata_id_wcache_enabled(const u16 *id) | |
470 | { | |
471 | if ((id[87] & 0xC000) != 0x4000) | |
472 | return 0; | |
473 | return id[85] & (1 << 5); | |
474 | } | |
475 | ||
476 | /** | |
477 | * ata_id_major_version - get ATA level of drive | |
478 | * @id: Identify data | |
479 | * | |
480 | * Caveats: | |
481 | * ATA-1 considers identify optional | |
482 | * ATA-2 introduces mandatory identify | |
483 | * ATA-3 introduces word 80 and accurate reporting | |
484 | * | |
485 | * The practical impact of this is that ata_id_major_version cannot | |
2dcb407e | 486 | * reliably report on drives below ATA3. |
c7293870 AC |
487 | */ |
488 | ||
3d2ca910 TH |
489 | static inline unsigned int ata_id_major_version(const u16 *id) |
490 | { | |
491 | unsigned int mver; | |
492 | ||
b352e57d AC |
493 | if (id[ATA_ID_MAJOR_VER] == 0xFFFF) |
494 | return 0; | |
495 | ||
3d2ca910 TH |
496 | for (mver = 14; mver >= 1; mver--) |
497 | if (id[ATA_ID_MAJOR_VER] & (1 << mver)) | |
498 | break; | |
499 | return mver; | |
500 | } | |
501 | ||
32d90911 TH |
502 | static inline int ata_id_is_sata(const u16 *id) |
503 | { | |
504 | return ata_id_major_version(id) >= 5 && id[93] == 0; | |
505 | } | |
506 | ||
057ace5e | 507 | static inline int ata_id_current_chs_valid(const u16 *id) |
8bf62ece | 508 | { |
9bec2e38 JG |
509 | /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command |
510 | has not been issued to the device then the values of | |
8bf62ece AL |
511 | id[54] to id[56] are vendor specific. */ |
512 | return (id[53] & 0x01) && /* Current translation valid */ | |
513 | id[54] && /* cylinders in current translation */ | |
514 | id[55] && /* heads in current translation */ | |
515 | id[55] <= 16 && | |
516 | id[56]; /* sectors in current translation */ | |
517 | } | |
518 | ||
b352e57d AC |
519 | static inline int ata_id_is_cfa(const u16 *id) |
520 | { | |
521 | u16 v = id[0]; | |
522 | if (v == 0x848A) /* Standard CF */ | |
523 | return 1; | |
524 | /* Could be CF hiding as standard ATA */ | |
525 | if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && | |
526 | (id[82] & ( 1 << 2))) | |
527 | return 1; | |
528 | return 0; | |
529 | } | |
530 | ||
fc085150 AC |
531 | static inline int ata_drive_40wire(const u16 *dev_id) |
532 | { | |
32d90911 | 533 | if (ata_id_is_sata(dev_id)) |
fc085150 | 534 | return 0; /* SATA */ |
61f216c7 | 535 | if ((dev_id[93] & 0xE000) == 0x6000) |
fc085150 AC |
536 | return 0; /* 80 wire */ |
537 | return 1; | |
538 | } | |
539 | ||
6bbfd53d AC |
540 | static inline int ata_drive_40wire_relaxed(const u16 *dev_id) |
541 | { | |
542 | if (ata_id_is_sata(dev_id)) | |
543 | return 0; /* SATA */ | |
544 | if ((dev_id[93] & 0x2000) == 0x2000) | |
545 | return 0; /* 80 wire */ | |
546 | return 1; | |
547 | } | |
548 | ||
057ace5e | 549 | static inline int atapi_cdb_len(const u16 *dev_id) |
1da177e4 LT |
550 | { |
551 | u16 tmp = dev_id[0] & 0x3; | |
552 | switch (tmp) { | |
553 | case 0: return 12; | |
554 | case 1: return 16; | |
555 | default: return -1; | |
556 | } | |
557 | } | |
558 | ||
f8d8e579 TB |
559 | static inline int atapi_command_packet_set(const u16 *dev_id) |
560 | { | |
561 | return (dev_id[0] >> 8) & 0x1f; | |
562 | } | |
563 | ||
057ace5e | 564 | static inline int is_atapi_taskfile(const struct ata_taskfile *tf) |
1da177e4 LT |
565 | { |
566 | return (tf->protocol == ATA_PROT_ATAPI) || | |
567 | (tf->protocol == ATA_PROT_ATAPI_NODATA) || | |
568 | (tf->protocol == ATA_PROT_ATAPI_DMA); | |
569 | } | |
570 | ||
07f6f7d0 AL |
571 | static inline int is_multi_taskfile(struct ata_taskfile *tf) |
572 | { | |
573 | return (tf->command == ATA_CMD_READ_MULTI) || | |
574 | (tf->command == ATA_CMD_WRITE_MULTI) || | |
575 | (tf->command == ATA_CMD_READ_MULTI_EXT) || | |
c2956a3b AL |
576 | (tf->command == ATA_CMD_WRITE_MULTI_EXT) || |
577 | (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT); | |
07f6f7d0 AL |
578 | } |
579 | ||
1da177e4 LT |
580 | static inline int ata_ok(u8 status) |
581 | { | |
582 | return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR)) | |
583 | == ATA_DRDY); | |
584 | } | |
585 | ||
c6a33e24 AL |
586 | static inline int lba_28_ok(u64 block, u32 n_block) |
587 | { | |
588 | /* check the ending block number */ | |
589 | return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256); | |
590 | } | |
591 | ||
592 | static inline int lba_48_ok(u64 block, u32 n_block) | |
593 | { | |
594 | /* check the ending block number */ | |
595 | return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536); | |
596 | } | |
597 | ||
814600ee TH |
598 | #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff) |
599 | #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16) | |
600 | #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff) | |
601 | #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf) | |
602 | ||
1da177e4 | 603 | #endif /* __LINUX_ATA_H__ */ |